Example usage for org.apache.lucene.index IndexReader close

Introduction

In this page you can find the example usage for org.apache.lucene.index IndexReader close.

Prototype

@Override
public final synchronized void close() throws IOException 

Source Link

Document

Closes files associated with this index.

Usage

From source file:com.krawler.esp.indexer.KrawlerIndexCreator.java

License:Open Source License

public void deleteAlertIndex(String alertId) {
    Term t = new Term("alertId", alertId);
    try {//from   ww  w  .  j  a  v a  2s .  c  o m
        IndexReader docInRead = IndexReader.open(this.indexPath);
        docInRead.deleteDocuments(t);
        docInRead.close();
        IndexWriter inw = new IndexWriter(this.indexPath, KWLAnalyzer, false);
        inw.optimize();
        inw.close();
    } catch (Exception ex) {
        System.out.print(ex.toString());
    }

}

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From source file:com.krawler.luceneSearchService.LuceneSearchImpl.java

License:Open Source License

@Override
public void deleteIndex(String indexName, String searchValue, String indexPath) throws KWLuceneException {
    Term t = new Term(indexName, searchValue);
    try {//from  w  ww  . ja  v  a  2 s.  c o m
        IndexReader docInRead = IndexReader.open(indexPath);
        docInRead.deleteDocuments(t);
        docInRead.close();
        IndexWriter inw = new IndexWriter(indexPath, this.KWLAnalyzer, false);
        inw.optimize();
        inw.close();
    } catch (Exception ex) {
        throw new KWLuceneException("DeleteIndex: " + ex.toString(), ex);
    }
}

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From source file:com.leavesfly.lia.advsearching.BooksLikeThis.java

License:Apache License

public static void main(String[] args) throws IOException {
    Directory dir = TestUtil.getBookIndexDirectory();

    IndexReader reader = IndexReader.open(dir);
    int numDocs = reader.maxDoc();

    BooksLikeThis blt = new BooksLikeThis(reader);
    for (int i = 0; i < numDocs; i++) { // #1
        System.out.println();/*from   w w w.j a  va  2 s . c o  m*/
        Document doc = reader.document(i);
        System.out.println(doc.get("title"));

        Document[] docs = blt.docsLike(i, 10); // #2
        if (docs.length == 0) {
            System.out.println("  None like this");
        }
        for (Document likeThisDoc : docs) {
            System.out.println("  -> " + likeThisDoc.get("title"));
        }
    }
    reader.close();
    dir.close();
}

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From source file:com.leavesfly.lia.advsearching.FunctionQueryTest.java

License:Apache License

public void testRecency() throws Throwable {
    Directory dir = TestUtil.getBookIndexDirectory();
    IndexReader r = IndexReader.open(dir);
    IndexSearcher s = new IndexSearcher(r);
    s.setDefaultFieldSortScoring(true, true);

    QueryParser parser = new QueryParser(Version.LUCENE_30, "contents",
            new StandardAnalyzer(Version.LUCENE_30));
    Query q = parser.parse("java in action"); // #A
    Query q2 = new RecencyBoostingQuery(q, // #B
            2.0, 2 * 365, "pubmonthAsDay");
    Sort sort = new Sort(new SortField[] { SortField.FIELD_SCORE, new SortField("title2", SortField.STRING) });
    TopDocs hits = s.search(q2, null, 5, sort);

    for (int i = 0; i < hits.scoreDocs.length; i++) {
        Document doc = r.document(hits.scoreDocs[i].doc);
        System.out.println((1 + i) + ": " + doc.get("title") + ": pubmonth=" + doc.get("pubmonth") + " score="
                + hits.scoreDocs[i].score);
    }/*from www .j a  v a2s.c  o  m*/
    s.close();
    r.close();
    dir.close();
}

---

From source file:com.leavesfly.lia.extsearch.payloads.PayloadsTest.java

License:Apache License

public void testPayloadTermQuery() throws Throwable {
    addDoc("Hurricane warning",
            "Bulletin: A hurricane warning was issued at " + "6 AM for the outer great banks");
    addDoc("Warning label maker", "The warning label maker is a delightful toy for "
            + "your precocious seven year old's warning needs");
    addDoc("Tornado warning",
            "Bulletin: There is a tornado warning for " + "Worcester county until 6 PM today");

    IndexReader r = writer.getReader();
    writer.close();/*w  w  w  .j a  v  a  2s.c  om*/

    IndexSearcher searcher = new IndexSearcher(r);

    searcher.setSimilarity(new BoostingSimilarity());

    Term warning = new Term("contents", "warning");

    Query query1 = new TermQuery(warning);
    System.out.println("\nTermQuery results:");
    TopDocs hits = searcher.search(query1, 10);
    TestUtil.dumpHits(searcher, hits);

    assertEquals("Warning label maker", // #B
            searcher.doc(hits.scoreDocs[0].doc).get("title")); // #B

    Query query2 = new PayloadTermQuery(warning, new AveragePayloadFunction());
    System.out.println("\nPayloadTermQuery results:");
    hits = searcher.search(query2, 10);
    TestUtil.dumpHits(searcher, hits);

    assertEquals("Warning label maker", // #C
            searcher.doc(hits.scoreDocs[2].doc).get("title")); // #C
    r.close();
    searcher.close();
}

---

From source file:com.leavesfly.lia.searching.Fragments.java

License:Apache License

public void nrtReader() throws Exception {
    IndexReader reader = null;
    IndexSearcher searcher;/*from   ww  w .ja  v a2 s  .c  om*/
    // START
    IndexReader newReader = reader.reopen();
    if (reader != newReader) {
        reader.close();
        reader = newReader;
        searcher = new IndexSearcher(reader);
    }
    // END
}

---

From source file:com.leavesfly.lia.searching.NearRealTimeTest.java

License:Apache License

public void testNearRealTime() throws Exception {
    Directory dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(Version.LUCENE_30),
            IndexWriter.MaxFieldLength.UNLIMITED);
    for (int i = 0; i < 10; i++) {
        Document doc = new Document();
        doc.add(new Field("id", "" + i, Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS));
        doc.add(new Field("text", "aaa", Field.Store.NO, Field.Index.ANALYZED));
        writer.addDocument(doc);/*from   w  w w  .  j a va  2 s  .c  o  m*/
    }
    IndexReader reader = writer.getReader(); // #1
    IndexSearcher searcher = new IndexSearcher(reader); // #A

    Query query = new TermQuery(new Term("text", "aaa"));
    TopDocs docs = searcher.search(query, 1);
    assertEquals(10, docs.totalHits); // #B

    writer.deleteDocuments(new Term("id", "7")); // #2

    Document doc = new Document(); // #3
    doc.add(new Field("id", // #3
            "11", // #3
            Field.Store.NO, // #3
            Field.Index.NOT_ANALYZED_NO_NORMS)); // #3
    doc.add(new Field("text", // #3
            "bbb", // #3
            Field.Store.NO, // #3
            Field.Index.ANALYZED)); // #3
    writer.addDocument(doc); // #3

    IndexReader newReader = reader.reopen(); // #4
    assertFalse(reader == newReader); // #5
    reader.close(); // #6
    searcher = new IndexSearcher(newReader);

    TopDocs hits = searcher.search(query, 10); // #7
    assertEquals(9, hits.totalHits); // #7

    query = new TermQuery(new Term("text", "bbb")); // #8
    hits = searcher.search(query, 1); // #8
    assertEquals(1, hits.totalHits); // #8

    newReader.close();
    writer.close();
}

---

From source file:com.leavesfly.lia.tool.BooksMoreLikeThis.java

License:Apache License

public static void main(String[] args) throws Throwable {

    String indexDir = System.getProperty("index.dir");
    FSDirectory directory = FSDirectory.open(new File(indexDir));
    IndexReader reader = IndexReader.open(directory);

    IndexSearcher searcher = new IndexSearcher(reader);

    int numDocs = reader.maxDoc();

    MoreLikeThis mlt = new MoreLikeThis(reader); // #A
    mlt.setFieldNames(new String[] { "title", "author" });
    mlt.setMinTermFreq(1); // #B
    mlt.setMinDocFreq(1);// w  w  w  .j  a v  a 2s  . com

    for (int docID = 0; docID < numDocs; docID++) { // #C
        System.out.println();
        Document doc = reader.document(docID);
        System.out.println(doc.get("title"));

        Query query = mlt.like(docID); // #D
        System.out.println("  query=" + query);

        TopDocs similarDocs = searcher.search(query, 10);
        if (similarDocs.totalHits == 0)
            System.out.println("  None like this");
        for (int i = 0; i < similarDocs.scoreDocs.length; i++) {
            if (similarDocs.scoreDocs[i].doc != docID) { // #E
                doc = reader.document(similarDocs.scoreDocs[i].doc);
                System.out.println("  -> " + doc.getField("title").stringValue());
            }
        }
    }

    searcher.close();
    reader.close();
    directory.close();
}

---

From source file:com.leavesfly.lia.tool.CreateSpellCheckerIndex.java

License:Apache License

public static void main(String[] args) throws IOException {

    if (args.length != 3) {
        System.out.println("Usage: java lia.tools.SpellCheckerTest SpellCheckerIndexDir IndexDir IndexField");
        System.exit(1);/*from  w w  w .  java2 s  .  c o  m*/
    }

    String spellCheckDir = args[0];
    String indexDir = args[1];
    String indexField = args[2];

    System.out.println("Now build SpellChecker index...");
    Directory dir = FSDirectory.open(new File(spellCheckDir));
    SpellChecker spell = new SpellChecker(dir); //#A
    long startTime = System.currentTimeMillis();

    Directory dir2 = FSDirectory.open(new File(indexDir));
    IndexReader r = IndexReader.open(dir2); //#B
    try {
        spell.indexDictionary(new LuceneDictionary(r, indexField)); //#C
    } finally {
        r.close();
    }
    dir.close();
    dir2.close();
    long endTime = System.currentTimeMillis();
    System.out.println("  took " + (endTime - startTime) + " milliseconds");
}

---

From source file:com.lin.studytest.lucene.SearchFiles.java

License:Apache License

/** Simple command-line based search demo. */
public static void main(String[] args) throws Exception {
    String usage = "Usage:\tjava org.apache.lucene.demo.SearchFiles [-index dir] [-field f] [-repeat n] [-queries file] [-query string] [-raw] [-paging hitsPerPage]\n\nSee http://lucene.apache.org/core/4_1_0/demo/ for details.";
    if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) {
        System.out.println(usage);
        System.exit(0);// w ww .ja va 2 s.com
    }

    String index = "D:\\software\\lucene\\testdata\\indexpath";
    String field = "contents";
    String queries = null;

    int repeat = 100;
    boolean raw = false;
    String queryString = "";
    int hitsPerPage = 10;

    //    for(int i = 0;i < args.length;i++) {
    //      if ("-index".equals(args[i])) {
    //        index = args[i+1];
    //        i++;
    //      } else if ("-field".equals(args[i])) {
    //        field = args[i+1];
    //        i++;
    //      } else if ("-queries".equals(args[i])) {
    //        queries = args[i+1];
    //        i++;
    //      } else if ("-query".equals(args[i])) {
    //        queryString = args[i+1];
    //        i++;
    //      } else if ("-repeat".equals(args[i])) {
    //        repeat = Integer.parseInt(args[i+1]);
    //        i++;
    //      } else if ("-raw".equals(args[i])) {
    //        raw = true;
    //      } else if ("-paging".equals(args[i])) {
    //        hitsPerPage = Integer.parseInt(args[i+1]);
    //        if (hitsPerPage <= 0) {
    //          System.err.println("There must be at least 1 hit per page.");
    //          System.exit(1);
    //        }
    //        i++;
    //      }
    //    }

    IndexReader reader = DirectoryReader.open(FSDirectory.open(Paths.get(index)));
    IndexSearcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer();

    BufferedReader in = null;
    if (queries != null) {
        in = Files.newBufferedReader(Paths.get(queries), StandardCharsets.UTF_8);
    } else {
        in = new BufferedReader(new InputStreamReader(System.in, StandardCharsets.UTF_8));
    }
    QueryParser parser = new QueryParser(field, analyzer);
    while (true) {
        if (queries == null && queryString == null) { // prompt the user
            System.out.println("Enter query: ");
        }

        String line = queryString != null ? queryString : in.readLine();

        if (line == null || line.length() == -1) {
            break;
        }

        line = line.trim();
        if (line.length() == 0) {
            break;
        }

        Query query = parser.parse(line);
        System.out.println("Searching for: " + query.toString(field));

        if (repeat > 0) { // repeat & time as benchmark
            Date start = new Date();
            for (int i = 0; i < repeat; i++) {
                searcher.search(query, 100);
            }
            Date end = new Date();
            System.out.println("Time: " + (end.getTime() - start.getTime()) + "ms");
        }

        doPagingSearch(in, searcher, query, hitsPerPage, raw, queries == null && queryString == null);

        if (queryString != null) {
            break;
        }
    }
    reader.close();
}

---

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